Being in Condition Yellow has allowed me to identify a thief before he acted on his intentions, a would-be assailant before he launched his attack. It has given me pause to re-evaluate the decision to pet a dog, or patronize certain establishments. It has even prevented my unwilling participation in more than one traffic accident.
On one occasion I was en route to Las Vegas to finance a wing of the MGM Grand when something about the truck towing a boat in the lane next to me on Interstate 15 caused me to slow down. Less than 10 seconds later, its tire blew and the truck and its cargo jack-knifed and went flying off the roadway. Staring at bits of its desiccated tire pin-wheeling along the roadway behind it, I felt a profound sense of relief that I hadn't been in the same position that I'd been seconds before.
I experienced a similar response the night my wife was driving on Interstate 10 and something about the car in the adjacent lane to us (a slight in-lane weave?) registered with me. It found me telling the wife to slow down not three seconds before the vehicle suddenly swerved herky-jerky and turned 90 degrees before suddenly slamming into the center divider in front of us. Absent her slowing, we would have likely been center-punched by the car and my former employer would have had one less critic to worry about.
A beautiful thing about condition yellow is that it isn't that profound sense of dread that can inexplicably wash over a person. Indeed, there is nothing inexplicable about it. It is the mind's cognitive effort to attune itself to those sensory-derived cues that something out of the norm might soon take place. That telltale sign may be the sudden prompt of sound (dogs barking), or the equally disquieting onset of silence (crickets quieting)—either of which can signal the possible threat of an impending ambush. As such, they become the auditory equivalent of the sea's tsunami-generated retreat from shore that foretells the calamity to follow.
And rather than promote the kind of anxiety or startle response that other catalysts might, condition yellow actually avails you the opportunity to better respond to the situation at hand. It means less time figuring out what the threat is and a diminished likelihood of experiencing the kind of panic associated with an emotionally charged response to a lack of preparedness. True, you might not muster the detached air of the seismologist evaluating a tremor-in-progress ("Ah, yes, there's the P-wave...oh, and here comes the S-wave..."), but you'll be far better off than you'd be otherwise.